./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 16a45ff550c912548b6ea863a62264e11925b5b01e108e129370b7b6a2adee8d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:02:58,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:02:58,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:02:58,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:02:58,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:02:58,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:02:58,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:02:58,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:02:58,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:02:58,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:02:58,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:02:58,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:02:58,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:02:58,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:02:58,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:02:58,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:02:58,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:02:58,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:02:58,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:02:58,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:02:58,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:02:58,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:02:58,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:02:58,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:02:58,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:02:58,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:02:58,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:02:58,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:02:58,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:02:58,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:02:58,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:02:58,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:02:58,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:02:58,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:02:58,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:02:58,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:02:58,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:02:58,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:02:58,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:02:58,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:02:58,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:02:58,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:02:58,264 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:02:58,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:02:58,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:02:58,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:02:58,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:02:58,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:02:58,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:02:58,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:02:58,274 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:02:58,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:02:58,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:02:58,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:02:58,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:02:58,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:02:58,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:02:58,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:02:58,278 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:02:58,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:02:58,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:02:58,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:02:58,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:02:58,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:02:58,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:02:58,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:02:58,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:02:58,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:02:58,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:02:58,283 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:02:58,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:02:58,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:02:58,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16a45ff550c912548b6ea863a62264e11925b5b01e108e129370b7b6a2adee8d [2022-11-02 21:02:58,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:02:58,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:02:58,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:02:58,709 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:02:58,710 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:02:58,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c [2022-11-02 21:02:58,809 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/data/cd53660a4/b589faeb25f34b56b58e995b10597cb7/FLAG41dfdedd5 [2022-11-02 21:02:59,586 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:02:59,587 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c [2022-11-02 21:02:59,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/data/cd53660a4/b589faeb25f34b56b58e995b10597cb7/FLAG41dfdedd5 [2022-11-02 21:02:59,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/data/cd53660a4/b589faeb25f34b56b58e995b10597cb7 [2022-11-02 21:02:59,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:02:59,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:02:59,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:02:59,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:02:59,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:02:59,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:02:59" (1/1) ... [2022-11-02 21:02:59,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4facd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:59, skipping insertion in model container [2022-11-02 21:02:59,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:02:59" (1/1) ... [2022-11-02 21:02:59,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:02:59,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:00,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c[1014,1027] [2022-11-02 21:03:00,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:00,531 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:00,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c[1014,1027] [2022-11-02 21:03:00,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:00,768 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:00,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00 WrapperNode [2022-11-02 21:03:00,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:00,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:00,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:00,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:00,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00" (1/1) ... [2022-11-02 21:03:00,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00" (1/1) ... [2022-11-02 21:03:01,048 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1165 [2022-11-02 21:03:01,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:01,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:01,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:01,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:01,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00" (1/1) ... [2022-11-02 21:03:01,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00" (1/1) ... [2022-11-02 21:03:01,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00" (1/1) ... [2022-11-02 21:03:01,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00" (1/1) ... [2022-11-02 21:03:01,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00" (1/1) ... [2022-11-02 21:03:01,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00" (1/1) ... [2022-11-02 21:03:01,147 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00" (1/1) ... [2022-11-02 21:03:01,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00" (1/1) ... [2022-11-02 21:03:01,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:01,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:01,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:01,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:01,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00" (1/1) ... [2022-11-02 21:03:01,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:01,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:01,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:01,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:01,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:01,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:03:01,646 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:03:01,648 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:03:16,168 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:03:16,181 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:03:16,182 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:03:16,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:16 BoogieIcfgContainer [2022-11-02 21:03:16,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:03:16,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:03:16,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:03:16,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:03:16,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:02:59" (1/3) ... [2022-11-02 21:03:16,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3af6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:16, skipping insertion in model container [2022-11-02 21:03:16,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:00" (2/3) ... [2022-11-02 21:03:16,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3af6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:16, skipping insertion in model container [2022-11-02 21:03:16,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:16" (3/3) ... [2022-11-02 21:03:16,199 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.2.prop1-func-interl.c [2022-11-02 21:03:16,222 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:03:16,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:03:16,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:16,310 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33a8c2db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:16,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:03:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 66 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:16,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:03:16,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:16,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:16,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:16,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:16,355 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-11-02 21:03:16,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:16,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162691475] [2022-11-02 21:03:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:16,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:17,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:17,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162691475] [2022-11-02 21:03:17,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162691475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:17,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:17,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:17,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128697705] [2022-11-02 21:03:17,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:17,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:17,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:17,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:17,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:17,359 INFO L87 Difference]: Start difference. First operand has 67 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 66 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:20,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:03:22,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:03:24,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:03:24,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:24,106 INFO L93 Difference]: Finished difference Result 189 states and 281 transitions. [2022-11-02 21:03:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:24,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 21:03:24,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:24,154 INFO L225 Difference]: With dead ends: 189 [2022-11-02 21:03:24,154 INFO L226 Difference]: Without dead ends: 124 [2022-11-02 21:03:24,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:24,161 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 173 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:24,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 258 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-02 21:03:24,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-02 21:03:24,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 65. [2022-11-02 21:03:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.453125) internal successors, (93), 64 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2022-11-02 21:03:24,214 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 9 [2022-11-02 21:03:24,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:24,215 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2022-11-02 21:03:24,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2022-11-02 21:03:24,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:03:24,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:24,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:24,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:03:24,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:24,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:24,218 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-11-02 21:03:24,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:24,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929426414] [2022-11-02 21:03:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:24,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:24,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:24,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929426414] [2022-11-02 21:03:24,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929426414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:24,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:24,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:24,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824215377] [2022-11-02 21:03:24,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:24,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:24,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:24,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:24,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:24,514 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:27,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:03:28,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:28,288 INFO L93 Difference]: Finished difference Result 188 states and 272 transitions. [2022-11-02 21:03:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:28,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 21:03:28,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:28,323 INFO L225 Difference]: With dead ends: 188 [2022-11-02 21:03:28,324 INFO L226 Difference]: Without dead ends: 127 [2022-11-02 21:03:28,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:28,326 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 170 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:28,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 264 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-02 21:03:28,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-02 21:03:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 67. [2022-11-02 21:03:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4393939393939394) internal successors, (95), 66 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 95 transitions. [2022-11-02 21:03:28,337 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 95 transitions. Word has length 9 [2022-11-02 21:03:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:28,337 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 95 transitions. [2022-11-02 21:03:28,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:28,338 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 95 transitions. [2022-11-02 21:03:28,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:03:28,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:28,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:28,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:03:28,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:28,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2022-11-02 21:03:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:28,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502669679] [2022-11-02 21:03:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:28,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:03:28,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:03:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:03:28,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:03:28,712 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:03:28,714 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:03:28,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:03:28,721 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 21:03:28,725 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:03:28,762 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:03:28,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:03:28 BoogieIcfgContainer [2022-11-02 21:03:28,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:03:28,779 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:03:28,779 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:03:28,780 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:03:28,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:16" (3/4) ... [2022-11-02 21:03:28,784 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:03:28,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:03:28,786 INFO L158 Benchmark]: Toolchain (without parser) took 28979.57ms. Allocated memory was 104.9MB in the beginning and 543.2MB in the end (delta: 438.3MB). Free memory was 65.4MB in the beginning and 309.6MB in the end (delta: -244.2MB). Peak memory consumption was 193.9MB. Max. memory is 16.1GB. [2022-11-02 21:03:28,786 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 104.9MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:03:28,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 973.60ms. Allocated memory is still 104.9MB. Free memory was 65.2MB in the beginning and 52.6MB in the end (delta: 12.6MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2022-11-02 21:03:28,788 INFO L158 Benchmark]: Boogie Procedure Inliner took 266.94ms. Allocated memory is still 104.9MB. Free memory was 52.6MB in the beginning and 59.2MB in the end (delta: -6.6MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2022-11-02 21:03:28,789 INFO L158 Benchmark]: Boogie Preprocessor took 133.01ms. Allocated memory is still 104.9MB. Free memory was 59.2MB in the beginning and 46.3MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 21:03:28,790 INFO L158 Benchmark]: RCFGBuilder took 15001.23ms. Allocated memory was 104.9MB in the beginning and 543.2MB in the end (delta: 438.3MB). Free memory was 46.3MB in the beginning and 203.6MB in the end (delta: -157.3MB). Peak memory consumption was 316.2MB. Max. memory is 16.1GB. [2022-11-02 21:03:28,791 INFO L158 Benchmark]: TraceAbstraction took 12589.93ms. Allocated memory is still 543.2MB. Free memory was 202.5MB in the beginning and 310.7MB in the end (delta: -108.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:03:28,791 INFO L158 Benchmark]: Witness Printer took 5.75ms. Allocated memory is still 543.2MB. Free memory was 310.7MB in the beginning and 309.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:03:28,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 104.9MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 973.60ms. Allocated memory is still 104.9MB. Free memory was 65.2MB in the beginning and 52.6MB in the end (delta: 12.6MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 266.94ms. Allocated memory is still 104.9MB. Free memory was 52.6MB in the beginning and 59.2MB in the end (delta: -6.6MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 133.01ms. Allocated memory is still 104.9MB. Free memory was 59.2MB in the beginning and 46.3MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 15001.23ms. Allocated memory was 104.9MB in the beginning and 543.2MB in the end (delta: 438.3MB). Free memory was 46.3MB in the beginning and 203.6MB in the end (delta: -157.3MB). Peak memory consumption was 316.2MB. Max. memory is 16.1GB. * TraceAbstraction took 12589.93ms. Allocated memory is still 543.2MB. Free memory was 202.5MB in the beginning and 310.7MB in the end (delta: -108.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.75ms. Allocated memory is still 543.2MB. Free memory was 310.7MB in the beginning and 309.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 170, overapproximation of bitwiseAnd at line 166. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_22 = 0; [L39] const SORT_4 var_45 = 1; [L40] const SORT_4 var_46 = 0; [L41] const SORT_2 var_54 = 0; [L42] const SORT_2 var_56 = 1; [L43] const SORT_3 var_66 = 0; [L44] const SORT_4 var_153 = 2; [L45] const SORT_2 var_165 = 2; [L46] const SORT_4 var_167 = 6; [L48] SORT_1 input_53; [L49] SORT_1 input_55; [L50] SORT_1 input_60; [L51] SORT_1 input_61; [L52] SORT_1 input_65; [L53] SORT_1 input_73; [L54] SORT_1 input_80; [L55] SORT_1 input_84; [L56] SORT_1 input_85; [L57] SORT_1 input_97; [L58] SORT_1 input_101; [L59] SORT_1 input_102; [L60] SORT_1 input_121; [L61] SORT_1 input_124; [L62] SORT_1 input_140; [L63] SORT_1 input_143; [L65] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L66] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L67] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_2 init_7_arg_1 = var_5; [L86] state_6 = init_7_arg_1 [L87] SORT_2 init_9_arg_1 = var_5; [L88] state_8 = init_9_arg_1 [L89] SORT_2 init_11_arg_1 = var_5; [L90] state_10 = init_11_arg_1 [L91] SORT_2 init_13_arg_1 = var_5; [L92] state_12 = init_13_arg_1 [L93] SORT_2 init_15_arg_1 = var_5; [L94] state_14 = init_15_arg_1 [L95] SORT_2 init_17_arg_1 = var_5; [L96] state_16 = init_17_arg_1 [L97] SORT_2 init_19_arg_1 = var_5; [L98] state_18 = init_19_arg_1 [L99] SORT_2 init_21_arg_1 = var_5; [L100] state_20 = init_21_arg_1 [L101] SORT_1 init_24_arg_1 = var_22; [L102] state_23 = init_24_arg_1 [L103] SORT_1 init_26_arg_1 = var_22; [L104] state_25 = init_26_arg_1 [L105] SORT_1 init_28_arg_1 = var_22; [L106] state_27 = init_28_arg_1 [L107] SORT_1 init_30_arg_1 = var_22; [L108] state_29 = init_30_arg_1 [L109] SORT_1 init_32_arg_1 = var_22; [L110] state_31 = init_32_arg_1 [L111] SORT_1 init_34_arg_1 = var_22; [L112] state_33 = init_34_arg_1 [L113] SORT_1 init_36_arg_1 = var_22; [L114] state_35 = init_36_arg_1 [L115] SORT_1 init_38_arg_1 = var_22; [L116] state_37 = init_38_arg_1 [L117] SORT_1 init_40_arg_1 = var_22; [L118] state_39 = init_40_arg_1 [L119] SORT_1 init_42_arg_1 = var_22; [L120] state_41 = init_42_arg_1 [L121] SORT_1 init_44_arg_1 = var_22; [L122] state_43 = init_44_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_6=0, state_8=0, var_153=2, var_165=2, var_167=6, var_22=0, var_45=1, var_46=0, var_5=0, var_54=0, var_56=1, var_66=0] [L125] input_53 = __VERIFIER_nondet_uchar() [L126] input_53 = input_53 & mask_SORT_1 [L127] input_55 = __VERIFIER_nondet_uchar() [L128] input_55 = input_55 & mask_SORT_1 [L129] input_60 = __VERIFIER_nondet_uchar() [L130] input_60 = input_60 & mask_SORT_1 [L131] input_61 = __VERIFIER_nondet_uchar() [L132] input_61 = input_61 & mask_SORT_1 [L133] input_65 = __VERIFIER_nondet_uchar() [L134] input_65 = input_65 & mask_SORT_1 [L135] input_73 = __VERIFIER_nondet_uchar() [L136] input_73 = input_73 & mask_SORT_1 [L137] input_80 = __VERIFIER_nondet_uchar() [L138] input_80 = input_80 & mask_SORT_1 [L139] input_84 = __VERIFIER_nondet_uchar() [L140] input_84 = input_84 & mask_SORT_1 [L141] input_85 = __VERIFIER_nondet_uchar() [L142] input_85 = input_85 & mask_SORT_1 [L143] input_97 = __VERIFIER_nondet_uchar() [L144] input_97 = input_97 & mask_SORT_1 [L145] input_101 = __VERIFIER_nondet_uchar() [L146] input_101 = input_101 & mask_SORT_1 [L147] input_102 = __VERIFIER_nondet_uchar() [L148] input_102 = input_102 & mask_SORT_1 [L149] input_121 = __VERIFIER_nondet_uchar() [L150] input_124 = __VERIFIER_nondet_uchar() [L151] input_140 = __VERIFIER_nondet_uchar() [L152] input_143 = __VERIFIER_nondet_uchar() [L155] SORT_1 var_47_arg_0 = state_31; [L156] SORT_4 var_47_arg_1 = var_45; [L157] SORT_4 var_47_arg_2 = var_46; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_101=1, input_102=0, input_121=2, input_124=4, input_140=3, input_143=1, input_53=0, input_55=0, input_60=1, input_61=0, input_65=0, input_73=1, input_80=0, input_84=1, input_85=0, input_97=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_6=0, state_8=0, var_153=2, var_165=2, var_167=6, var_22=0, var_45=1, var_46=0, var_47_arg_0=0, var_47_arg_1=1, var_47_arg_2=0, var_5=0, var_54=0, var_56=1, var_66=0] [L158] EXPR var_47_arg_0 ? var_47_arg_1 : var_47_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_101=1, input_102=0, input_121=2, input_124=4, input_140=3, input_143=1, input_53=0, input_55=0, input_60=1, input_61=0, input_65=0, input_73=1, input_80=0, input_84=1, input_85=0, input_97=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_6=0, state_8=0, var_153=2, var_165=2, var_167=6, var_22=0, var_45=1, var_46=0, var_47_arg_0=0, var_47_arg_0 ? var_47_arg_1 : var_47_arg_2=0, var_47_arg_1=1, var_47_arg_2=0, var_5=0, var_54=0, var_56=1, var_66=0] [L158] SORT_4 var_47 = var_47_arg_0 ? var_47_arg_1 : var_47_arg_2; [L159] SORT_1 var_48_arg_0 = state_41; [L160] SORT_4 var_48_arg_1 = var_45; [L161] SORT_4 var_48_arg_2 = var_46; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_101=1, input_102=0, input_121=2, input_124=4, input_140=3, input_143=1, input_53=0, input_55=0, input_60=1, input_61=0, input_65=0, input_73=1, input_80=0, input_84=1, input_85=0, input_97=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_6=0, state_8=0, var_153=2, var_165=2, var_167=6, var_22=0, var_45=1, var_46=0, var_47=0, var_47_arg_0=0, var_47_arg_1=1, var_47_arg_2=0, var_48_arg_0=0, var_48_arg_1=1, var_48_arg_2=0, var_5=0, var_54=0, var_56=1, var_66=0] [L162] EXPR var_48_arg_0 ? var_48_arg_1 : var_48_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_101=1, input_102=0, input_121=2, input_124=4, input_140=3, input_143=1, input_53=0, input_55=0, input_60=1, input_61=0, input_65=0, input_73=1, input_80=0, input_84=1, input_85=0, input_97=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_6=0, state_8=0, var_153=2, var_165=2, var_167=6, var_22=0, var_45=1, var_46=0, var_47=0, var_47_arg_0=0, var_47_arg_1=1, var_47_arg_2=0, var_48_arg_0=0, var_48_arg_0 ? var_48_arg_1 : var_48_arg_2=0, var_48_arg_1=1, var_48_arg_2=0, var_5=0, var_54=0, var_56=1, var_66=0] [L162] SORT_4 var_48 = var_48_arg_0 ? var_48_arg_1 : var_48_arg_2; [L163] SORT_4 var_49_arg_0 = var_47; [L164] SORT_4 var_49_arg_1 = var_48; [L165] SORT_4 var_49 = var_49_arg_0 + var_49_arg_1; [L166] var_49 = var_49 & mask_SORT_4 [L167] SORT_4 var_50_arg_0 = var_49; [L168] SORT_4 var_50_arg_1 = var_45; [L169] SORT_1 var_50 = var_50_arg_0 <= var_50_arg_1; [L170] SORT_1 var_51_arg_0 = ~state_43; [L171] var_51_arg_0 = var_51_arg_0 & mask_SORT_1 [L172] SORT_1 var_51_arg_1 = ~var_50; [L173] var_51_arg_1 = var_51_arg_1 & mask_SORT_1 [L174] SORT_1 var_51 = var_51_arg_0 & var_51_arg_1; [L175] var_51 = var_51 & mask_SORT_1 [L176] SORT_1 bad_52_arg_0 = var_51; [L177] CALL __VERIFIER_assert(!(bad_52_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 343 SdHoareTripleChecker+Valid, 10.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 343 mSDsluCounter, 522 SdHoareTripleChecker+Invalid, 10.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 346 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 176 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 119 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 21:03:28,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 16a45ff550c912548b6ea863a62264e11925b5b01e108e129370b7b6a2adee8d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:03:31,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:31,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:31,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:31,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:31,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:31,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:31,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:31,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:31,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:31,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:31,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:31,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:31,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:31,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:31,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:31,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:31,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:31,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:31,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:31,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:31,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:31,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:31,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:31,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:31,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:31,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:31,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:31,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:31,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:31,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:31,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:31,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:31,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:31,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:31,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:31,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:31,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:31,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:31,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:31,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:31,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:03:31,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:31,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:31,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:31,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:31,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:31,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:31,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:31,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:31,845 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:31,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:31,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:31,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:03:31,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:31,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:03:31,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:03:31,847 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:03:31,848 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:03:31,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:03:31,848 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:31,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:03:31,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:31,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:31,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:31,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:31,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:31,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:31,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:03:31,851 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:03:31,851 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:03:31,851 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:03:31,851 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:03:31,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:03:31,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:03:31,852 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16a45ff550c912548b6ea863a62264e11925b5b01e108e129370b7b6a2adee8d [2022-11-02 21:03:32,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:32,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:32,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:32,385 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:32,386 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:32,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c [2022-11-02 21:03:32,495 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/data/b0ccaeca5/972411938e3443ebb897d6341c980cae/FLAGd1514172c [2022-11-02 21:03:33,230 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:33,230 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c [2022-11-02 21:03:33,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/data/b0ccaeca5/972411938e3443ebb897d6341c980cae/FLAGd1514172c [2022-11-02 21:03:33,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/data/b0ccaeca5/972411938e3443ebb897d6341c980cae [2022-11-02 21:03:33,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:33,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:33,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:33,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:33,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:33,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:33" (1/1) ... [2022-11-02 21:03:33,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5b681b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:33, skipping insertion in model container [2022-11-02 21:03:33,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:33" (1/1) ... [2022-11-02 21:03:33,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:33,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:33,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c[1014,1027] [2022-11-02 21:03:34,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:34,178 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:34,192 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.2.prop1-func-interl.c[1014,1027] [2022-11-02 21:03:34,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:34,397 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:34,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34 WrapperNode [2022-11-02 21:03:34,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:34,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:34,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:34,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:34,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,598 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1165 [2022-11-02 21:03:34,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:34,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:34,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:34,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:34,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,709 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:34,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:34,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:34,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:34,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34" (1/1) ... [2022-11-02 21:03:34,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:34,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:34,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:34,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:34,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:03:35,327 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:03:35,330 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:03:36,499 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:03:36,509 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:03:36,509 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:03:36,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:36 BoogieIcfgContainer [2022-11-02 21:03:36,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:03:36,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:03:36,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:03:36,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:03:36,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:03:33" (1/3) ... [2022-11-02 21:03:36,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee0792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:36, skipping insertion in model container [2022-11-02 21:03:36,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:34" (2/3) ... [2022-11-02 21:03:36,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee0792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:36, skipping insertion in model container [2022-11-02 21:03:36,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:36" (3/3) ... [2022-11-02 21:03:36,525 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.2.prop1-func-interl.c [2022-11-02 21:03:36,549 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:03:36,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:03:36,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:36,620 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@37c79d04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:36,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:03:36,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 66 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:36,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:03:36,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:36,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:36,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:36,640 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-11-02 21:03:36,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:36,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782728184] [2022-11-02 21:03:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:36,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:36,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:36,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:36,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:03:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:37,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:03:37,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:37,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:37,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:37,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782728184] [2022-11-02 21:03:37,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782728184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:37,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:37,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:37,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196429884] [2022-11-02 21:03:37,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:37,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:37,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:37,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:37,207 INFO L87 Difference]: Start difference. First operand has 67 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 66 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:37,504 INFO L93 Difference]: Finished difference Result 249 states and 371 transitions. [2022-11-02 21:03:37,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:37,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 21:03:37,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:37,526 INFO L225 Difference]: With dead ends: 249 [2022-11-02 21:03:37,528 INFO L226 Difference]: Without dead ends: 184 [2022-11-02 21:03:37,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:37,550 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 259 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:37,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 343 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:37,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-02 21:03:37,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 65. [2022-11-02 21:03:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.453125) internal successors, (93), 64 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2022-11-02 21:03:37,624 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 9 [2022-11-02 21:03:37,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:37,625 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2022-11-02 21:03:37,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:37,625 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2022-11-02 21:03:37,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:03:37,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:37,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:37,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:37,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:37,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-11-02 21:03:37,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:37,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434129297] [2022-11-02 21:03:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:37,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:37,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:37,843 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:37,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:03:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:38,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:03:38,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:38,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:38,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:38,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434129297] [2022-11-02 21:03:38,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434129297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:38,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:38,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:38,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546802110] [2022-11-02 21:03:38,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:38,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:38,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:38,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:38,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:38,153 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:38,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:38,308 INFO L93 Difference]: Finished difference Result 245 states and 355 transitions. [2022-11-02 21:03:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:38,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 21:03:38,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:38,312 INFO L225 Difference]: With dead ends: 245 [2022-11-02 21:03:38,312 INFO L226 Difference]: Without dead ends: 184 [2022-11-02 21:03:38,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:38,313 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 253 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:38,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 345 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:38,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-02 21:03:38,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 67. [2022-11-02 21:03:38,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4393939393939394) internal successors, (95), 66 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:38,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 95 transitions. [2022-11-02 21:03:38,321 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 95 transitions. Word has length 9 [2022-11-02 21:03:38,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:38,321 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 95 transitions. [2022-11-02 21:03:38,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:38,322 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 95 transitions. [2022-11-02 21:03:38,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:03:38,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:38,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:38,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:38,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:38,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:38,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:38,535 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2022-11-02 21:03:38,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:38,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695305139] [2022-11-02 21:03:38,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:38,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:38,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:38,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:38,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:03:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:38,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:03:38,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:39,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:39,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:39,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695305139] [2022-11-02 21:03:39,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695305139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:39,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:39,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:03:39,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407708489] [2022-11-02 21:03:39,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:39,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:03:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:03:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:39,070 INFO L87 Difference]: Start difference. First operand 67 states and 95 transitions. Second operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:39,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:39,702 INFO L93 Difference]: Finished difference Result 196 states and 281 transitions. [2022-11-02 21:03:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:03:39,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 21:03:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:39,705 INFO L225 Difference]: With dead ends: 196 [2022-11-02 21:03:39,705 INFO L226 Difference]: Without dead ends: 194 [2022-11-02 21:03:39,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:39,707 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 427 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:39,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 495 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:03:39,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-02 21:03:39,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 71. [2022-11-02 21:03:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 70 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 100 transitions. [2022-11-02 21:03:39,719 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 100 transitions. Word has length 9 [2022-11-02 21:03:39,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:39,720 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 100 transitions. [2022-11-02 21:03:39,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:39,720 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 100 transitions. [2022-11-02 21:03:39,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:03:39,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:39,727 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:39,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:39,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:39,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:39,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1532815515, now seen corresponding path program 1 times [2022-11-02 21:03:39,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:39,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48304326] [2022-11-02 21:03:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:39,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:39,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:39,947 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:39,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:03:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:40,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:03:40,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:40,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:40,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:40,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48304326] [2022-11-02 21:03:40,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48304326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:40,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:40,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:40,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663082913] [2022-11-02 21:03:40,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:40,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:40,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:40,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:40,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:40,779 INFO L87 Difference]: Start difference. First operand 71 states and 100 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:40,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:40,933 INFO L93 Difference]: Finished difference Result 152 states and 217 transitions. [2022-11-02 21:03:40,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:03:40,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:03:40,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:40,936 INFO L225 Difference]: With dead ends: 152 [2022-11-02 21:03:40,936 INFO L226 Difference]: Without dead ends: 87 [2022-11-02 21:03:40,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:40,938 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 13 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:40,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 484 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-02 21:03:40,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-02 21:03:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-02 21:03:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.4186046511627908) internal successors, (122), 86 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:40,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 122 transitions. [2022-11-02 21:03:40,950 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 122 transitions. Word has length 68 [2022-11-02 21:03:40,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:40,951 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 122 transitions. [2022-11-02 21:03:40,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:40,951 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 122 transitions. [2022-11-02 21:03:40,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:03:40,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:40,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:40,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:41,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:41,179 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:41,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:41,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1179727133, now seen corresponding path program 1 times [2022-11-02 21:03:41,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:41,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37603807] [2022-11-02 21:03:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:41,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:41,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:41,185 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:41,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:03:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:41,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:03:41,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:42,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:42,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:42,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37603807] [2022-11-02 21:03:42,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37603807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:42,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:42,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:42,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780967927] [2022-11-02 21:03:42,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:42,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:42,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:42,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:42,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:42,301 INFO L87 Difference]: Start difference. First operand 87 states and 122 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:42,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:42,456 INFO L93 Difference]: Finished difference Result 176 states and 252 transitions. [2022-11-02 21:03:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:03:42,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:03:42,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:42,459 INFO L225 Difference]: With dead ends: 176 [2022-11-02 21:03:42,459 INFO L226 Difference]: Without dead ends: 111 [2022-11-02 21:03:42,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:42,461 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 33 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:42,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 404 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2022-11-02 21:03:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-02 21:03:42,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-02 21:03:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4272727272727272) internal successors, (157), 110 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 157 transitions. [2022-11-02 21:03:42,471 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 157 transitions. Word has length 68 [2022-11-02 21:03:42,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:42,471 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 157 transitions. [2022-11-02 21:03:42,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:42,472 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 157 transitions. [2022-11-02 21:03:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:03:42,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:42,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:42,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:42,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:42,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:42,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:42,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1729036769, now seen corresponding path program 1 times [2022-11-02 21:03:42,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:42,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692465854] [2022-11-02 21:03:42,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:42,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:42,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:42,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:42,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:03:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:43,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:03:43,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:43,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:43,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:43,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692465854] [2022-11-02 21:03:43,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692465854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:43,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:43,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:43,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528999292] [2022-11-02 21:03:43,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:43,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:43,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:43,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:43,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:43,859 INFO L87 Difference]: Start difference. First operand 111 states and 157 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:43,987 INFO L93 Difference]: Finished difference Result 234 states and 336 transitions. [2022-11-02 21:03:43,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:03:43,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:03:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:43,989 INFO L225 Difference]: With dead ends: 234 [2022-11-02 21:03:43,989 INFO L226 Difference]: Without dead ends: 169 [2022-11-02 21:03:43,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:43,991 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 81 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:43,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 398 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-11-02 21:03:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-02 21:03:44,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-02 21:03:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.4345238095238095) internal successors, (241), 168 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 241 transitions. [2022-11-02 21:03:44,014 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 241 transitions. Word has length 68 [2022-11-02 21:03:44,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:44,015 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 241 transitions. [2022-11-02 21:03:44,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:44,015 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 241 transitions. [2022-11-02 21:03:44,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:03:44,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:44,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:44,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:44,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:44,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:44,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:44,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1286066849, now seen corresponding path program 1 times [2022-11-02 21:03:44,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:44,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586871186] [2022-11-02 21:03:44,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:44,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:44,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:44,245 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:44,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:03:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:44,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:03:44,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:45,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:46,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:46,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586871186] [2022-11-02 21:03:46,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586871186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:46,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:46,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:03:46,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57108514] [2022-11-02 21:03:46,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:46,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:03:46,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:46,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:03:46,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:46,088 INFO L87 Difference]: Start difference. First operand 169 states and 241 transitions. Second operand has 16 states, 16 states have (on average 8.125) internal successors, (130), 16 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:46,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:46,211 INFO L93 Difference]: Finished difference Result 396 states and 569 transitions. [2022-11-02 21:03:46,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:03:46,212 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.125) internal successors, (130), 16 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:03:46,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:46,214 INFO L225 Difference]: With dead ends: 396 [2022-11-02 21:03:46,214 INFO L226 Difference]: Without dead ends: 331 [2022-11-02 21:03:46,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:03:46,215 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 292 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:46,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1439 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2022-11-02 21:03:46,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-02 21:03:46,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 274. [2022-11-02 21:03:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.435897435897436) internal successors, (392), 273 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:46,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 392 transitions. [2022-11-02 21:03:46,227 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 392 transitions. Word has length 68 [2022-11-02 21:03:46,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:46,227 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 392 transitions. [2022-11-02 21:03:46,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.125) internal successors, (130), 16 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:46,228 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 392 transitions. [2022-11-02 21:03:46,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:03:46,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:46,230 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:46,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:46,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:46,451 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:46,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:46,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1228808547, now seen corresponding path program 1 times [2022-11-02 21:03:46,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:46,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542297629] [2022-11-02 21:03:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:46,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:46,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:46,453 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:46,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:03:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:46,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:03:46,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:47,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:48,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:48,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542297629] [2022-11-02 21:03:48,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542297629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:48,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:48,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:03:48,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394597938] [2022-11-02 21:03:48,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:48,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:03:48,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:48,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:03:48,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:48,193 INFO L87 Difference]: Start difference. First operand 274 states and 392 transitions. Second operand has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:48,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:48,476 INFO L93 Difference]: Finished difference Result 529 states and 763 transitions. [2022-11-02 21:03:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:03:48,477 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:03:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:48,481 INFO L225 Difference]: With dead ends: 529 [2022-11-02 21:03:48,481 INFO L226 Difference]: Without dead ends: 464 [2022-11-02 21:03:48,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:03:48,483 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 110 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:48,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 883 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2022-11-02 21:03:48,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-11-02 21:03:48,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2022-11-02 21:03:48,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.4406047516198703) internal successors, (667), 463 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:48,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 667 transitions. [2022-11-02 21:03:48,500 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 667 transitions. Word has length 68 [2022-11-02 21:03:48,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:48,500 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 667 transitions. [2022-11-02 21:03:48,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:48,501 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 667 transitions. [2022-11-02 21:03:48,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:03:48,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:48,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:48,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:48,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:48,719 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:48,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:48,719 INFO L85 PathProgramCache]: Analyzing trace with hash -335322209, now seen corresponding path program 1 times [2022-11-02 21:03:48,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:48,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814882746] [2022-11-02 21:03:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:48,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:48,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:48,722 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:48,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:03:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:49,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 21:03:49,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:03:50,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:03:52,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:52,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814882746] [2022-11-02 21:03:52,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814882746] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:52,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:52,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 21:03:52,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816220946] [2022-11-02 21:03:52,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:52,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:03:52,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:52,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:03:52,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:03:52,297 INFO L87 Difference]: Start difference. First operand 464 states and 667 transitions. Second operand has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:53,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:53,488 INFO L93 Difference]: Finished difference Result 587 states and 846 transitions. [2022-11-02 21:03:53,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:03:53,490 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:03:53,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:53,493 INFO L225 Difference]: With dead ends: 587 [2022-11-02 21:03:53,493 INFO L226 Difference]: Without dead ends: 585 [2022-11-02 21:03:53,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:03:53,494 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 565 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:53,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1002 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 140 Invalid, 0 Unknown, 90 Unchecked, 0.6s Time] [2022-11-02 21:03:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-02 21:03:53,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 464. [2022-11-02 21:03:53,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.4406047516198703) internal successors, (667), 463 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:53,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 667 transitions. [2022-11-02 21:03:53,516 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 667 transitions. Word has length 68 [2022-11-02 21:03:53,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:53,517 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 667 transitions. [2022-11-02 21:03:53,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:53,517 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 667 transitions. [2022-11-02 21:03:53,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:03:53,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:53,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:53,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:53,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:53,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:53,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:53,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1301525985, now seen corresponding path program 1 times [2022-11-02 21:03:53,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:53,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545341370] [2022-11-02 21:03:53,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:53,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:53,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:53,746 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:53,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:03:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:54,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 21:03:54,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:03:55,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:03:57,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:57,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545341370] [2022-11-02 21:03:57,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545341370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:57,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:57,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 21:03:57,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884176587] [2022-11-02 21:03:57,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:57,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:03:57,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:57,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:03:57,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:03:57,727 INFO L87 Difference]: Start difference. First operand 464 states and 667 transitions. Second operand has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:58,690 INFO L93 Difference]: Finished difference Result 587 states and 846 transitions. [2022-11-02 21:03:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:03:58,692 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:03:58,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:58,694 INFO L225 Difference]: With dead ends: 587 [2022-11-02 21:03:58,694 INFO L226 Difference]: Without dead ends: 585 [2022-11-02 21:03:58,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:03:58,696 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 456 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:58,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 928 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 116 Invalid, 0 Unknown, 96 Unchecked, 0.5s Time] [2022-11-02 21:03:58,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-02 21:03:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 462. [2022-11-02 21:03:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.4425162689804771) internal successors, (665), 461 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:58,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 665 transitions. [2022-11-02 21:03:58,714 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 665 transitions. Word has length 68 [2022-11-02 21:03:58,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:58,714 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 665 transitions. [2022-11-02 21:03:58,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.571428571428571) internal successors, (134), 14 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:58,715 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 665 transitions. [2022-11-02 21:03:58,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:03:58,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:58,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:58,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:58,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:58,939 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:58,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:58,939 INFO L85 PathProgramCache]: Analyzing trace with hash -408099229, now seen corresponding path program 1 times [2022-11-02 21:03:58,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:58,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231897005] [2022-11-02 21:03:58,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:58,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:58,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:58,942 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:58,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:03:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:59,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 21:03:59,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:00,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:03,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:03,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231897005] [2022-11-02 21:04:03,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231897005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:03,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:03,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:04:03,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847139187] [2022-11-02 21:04:03,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:03,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:04:03,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:03,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:04:03,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:04:03,638 INFO L87 Difference]: Start difference. First operand 462 states and 665 transitions. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:03,827 INFO L93 Difference]: Finished difference Result 612 states and 878 transitions. [2022-11-02 21:04:03,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:04:03,831 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:04:03,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:03,834 INFO L225 Difference]: With dead ends: 612 [2022-11-02 21:04:03,834 INFO L226 Difference]: Without dead ends: 610 [2022-11-02 21:04:03,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:04:03,835 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 219 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:03,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 594 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2022-11-02 21:04:03,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-11-02 21:04:03,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 606. [2022-11-02 21:04:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 1.4396694214876034) internal successors, (871), 605 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:03,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 871 transitions. [2022-11-02 21:04:03,859 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 871 transitions. Word has length 68 [2022-11-02 21:04:03,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:03,860 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 871 transitions. [2022-11-02 21:04:03,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:03,860 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 871 transitions. [2022-11-02 21:04:03,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:04:03,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:03,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:03,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-02 21:04:04,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:04,078 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:04,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:04,079 INFO L85 PathProgramCache]: Analyzing trace with hash -2097042971, now seen corresponding path program 1 times [2022-11-02 21:04:04,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:04,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013454533] [2022-11-02 21:04:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:04,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:04,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:04,082 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:04,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:04:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:04,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 21:04:04,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:05,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:13,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:13,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013454533] [2022-11-02 21:04:13,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013454533] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:13,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:13,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:04:13,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970097711] [2022-11-02 21:04:13,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:13,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:04:13,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:04:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=188, Unknown=3, NotChecked=0, Total=240 [2022-11-02 21:04:13,622 INFO L87 Difference]: Start difference. First operand 606 states and 871 transitions. Second operand has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:13,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:13,666 INFO L93 Difference]: Finished difference Result 834 states and 1198 transitions. [2022-11-02 21:04:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:04:13,666 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:04:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:13,670 INFO L225 Difference]: With dead ends: 834 [2022-11-02 21:04:13,670 INFO L226 Difference]: Without dead ends: 832 [2022-11-02 21:04:13,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=49, Invalid=188, Unknown=3, NotChecked=0, Total=240 [2022-11-02 21:04:13,671 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 455 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:13,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1149 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-11-02 21:04:13,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-11-02 21:04:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 645. [2022-11-02 21:04:13,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.4409937888198758) internal successors, (928), 644 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:13,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 928 transitions. [2022-11-02 21:04:13,698 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 928 transitions. Word has length 68 [2022-11-02 21:04:13,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:13,699 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 928 transitions. [2022-11-02 21:04:13,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:13,699 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 928 transitions. [2022-11-02 21:04:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:04:13,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:13,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:13,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:13,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:13,920 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:13,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:13,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2081429733, now seen corresponding path program 1 times [2022-11-02 21:04:13,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:13,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461053018] [2022-11-02 21:04:13,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:13,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:13,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:13,924 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:13,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:04:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:14,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 21:04:14,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:15,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:24,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:24,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461053018] [2022-11-02 21:04:24,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461053018] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:24,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:24,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:04:24,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084114310] [2022-11-02 21:04:24,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:24,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:04:24,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:24,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:04:24,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=228, Unknown=3, NotChecked=0, Total=306 [2022-11-02 21:04:24,148 INFO L87 Difference]: Start difference. First operand 645 states and 928 transitions. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:24,418 INFO L93 Difference]: Finished difference Result 897 states and 1287 transitions. [2022-11-02 21:04:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:04:24,419 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:04:24,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:24,423 INFO L225 Difference]: With dead ends: 897 [2022-11-02 21:04:24,423 INFO L226 Difference]: Without dead ends: 895 [2022-11-02 21:04:24,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=91, Invalid=286, Unknown=3, NotChecked=0, Total=380 [2022-11-02 21:04:24,424 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 273 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:24,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1184 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-11-02 21:04:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-02 21:04:24,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 837. [2022-11-02 21:04:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 1.4354066985645932) internal successors, (1200), 836 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1200 transitions. [2022-11-02 21:04:24,471 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1200 transitions. Word has length 68 [2022-11-02 21:04:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:24,472 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1200 transitions. [2022-11-02 21:04:24,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1200 transitions. [2022-11-02 21:04:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:04:24,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:24,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:24,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:24,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:24,686 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:24,686 INFO L85 PathProgramCache]: Analyzing trace with hash 392485991, now seen corresponding path program 1 times [2022-11-02 21:04:24,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:24,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083153758] [2022-11-02 21:04:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:24,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:24,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:24,691 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:24,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:04:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:25,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-02 21:04:25,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:26,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:34,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:34,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083153758] [2022-11-02 21:04:34,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083153758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:34,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:34,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:04:34,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563512326] [2022-11-02 21:04:34,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:34,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:04:34,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:34,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:04:34,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=250, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:04:34,059 INFO L87 Difference]: Start difference. First operand 837 states and 1200 transitions. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:34,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:34,135 INFO L93 Difference]: Finished difference Result 1344 states and 1919 transitions. [2022-11-02 21:04:34,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:04:34,136 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:04:34,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:34,141 INFO L225 Difference]: With dead ends: 1344 [2022-11-02 21:04:34,141 INFO L226 Difference]: Without dead ends: 1342 [2022-11-02 21:04:34,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=54, Invalid=250, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:04:34,142 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 297 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:34,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1091 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2022-11-02 21:04:34,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-11-02 21:04:34,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 857. [2022-11-02 21:04:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 1.4369158878504673) internal successors, (1230), 856 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1230 transitions. [2022-11-02 21:04:34,202 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1230 transitions. Word has length 68 [2022-11-02 21:04:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:34,202 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1230 transitions. [2022-11-02 21:04:34,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1230 transitions. [2022-11-02 21:04:34,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:04:34,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:34,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:34,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:34,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:34,418 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:34,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:34,419 INFO L85 PathProgramCache]: Analyzing trace with hash -2092631189, now seen corresponding path program 1 times [2022-11-02 21:04:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:34,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947277820] [2022-11-02 21:04:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:34,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:34,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:34,421 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:34,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:04:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:34,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 21:04:34,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:36,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:41,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:41,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947277820] [2022-11-02 21:04:41,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947277820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:41,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:41,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:04:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382156663] [2022-11-02 21:04:41,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:41,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:04:41,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:41,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:04:41,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=251, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:04:41,714 INFO L87 Difference]: Start difference. First operand 857 states and 1230 transitions. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:41,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:41,827 INFO L93 Difference]: Finished difference Result 1566 states and 2240 transitions. [2022-11-02 21:04:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:04:41,827 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:04:41,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:41,833 INFO L225 Difference]: With dead ends: 1566 [2022-11-02 21:04:41,834 INFO L226 Difference]: Without dead ends: 1564 [2022-11-02 21:04:41,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=54, Invalid=251, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:04:41,835 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 210 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:41,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1079 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 45 Unchecked, 0.0s Time] [2022-11-02 21:04:41,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2022-11-02 21:04:41,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 923. [2022-11-02 21:04:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 922 states have (on average 1.4392624728850325) internal successors, (1327), 922 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1327 transitions. [2022-11-02 21:04:41,911 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1327 transitions. Word has length 68 [2022-11-02 21:04:41,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:41,911 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 1327 transitions. [2022-11-02 21:04:41,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1327 transitions. [2022-11-02 21:04:41,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:04:41,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:41,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:41,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:42,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:42,136 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:42,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:42,137 INFO L85 PathProgramCache]: Analyzing trace with hash -831713939, now seen corresponding path program 1 times [2022-11-02 21:04:42,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:42,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38506004] [2022-11-02 21:04:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:42,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:42,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:42,139 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:42,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:04:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:42,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:04:42,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:42,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:42,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:42,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38506004] [2022-11-02 21:04:42,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38506004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:42,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:42,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:42,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54279678] [2022-11-02 21:04:42,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:42,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:42,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:42,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:42,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:42,755 INFO L87 Difference]: Start difference. First operand 923 states and 1327 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:43,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:43,170 INFO L93 Difference]: Finished difference Result 3058 states and 4392 transitions. [2022-11-02 21:04:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:04:43,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:04:43,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:43,179 INFO L225 Difference]: With dead ends: 3058 [2022-11-02 21:04:43,180 INFO L226 Difference]: Without dead ends: 2227 [2022-11-02 21:04:43,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:04:43,183 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 215 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:43,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 754 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2022-11-02 21:04:43,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2022-11-02 21:04:43,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 923. [2022-11-02 21:04:43,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 922 states have (on average 1.4349240780911063) internal successors, (1323), 922 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:43,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1323 transitions. [2022-11-02 21:04:43,267 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1323 transitions. Word has length 68 [2022-11-02 21:04:43,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:43,268 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 1323 transitions. [2022-11-02 21:04:43,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:43,268 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1323 transitions. [2022-11-02 21:04:43,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:04:43,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:43,271 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:43,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:43,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:43,486 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:43,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:43,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1434667247, now seen corresponding path program 1 times [2022-11-02 21:04:43,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:43,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21576519] [2022-11-02 21:04:43,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:43,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:43,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:43,492 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:43,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:04:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:44,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:04:44,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:44,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:44,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:44,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21576519] [2022-11-02 21:04:44,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21576519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:44,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:44,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:44,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679332994] [2022-11-02 21:04:44,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:44,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:44,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:44,192 INFO L87 Difference]: Start difference. First operand 923 states and 1323 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:44,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:44,594 INFO L93 Difference]: Finished difference Result 2746 states and 3928 transitions. [2022-11-02 21:04:44,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:04:44,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:04:44,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:44,603 INFO L225 Difference]: With dead ends: 2746 [2022-11-02 21:04:44,603 INFO L226 Difference]: Without dead ends: 2043 [2022-11-02 21:04:44,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:04:44,605 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 178 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:44,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 828 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 29 Unchecked, 0.2s Time] [2022-11-02 21:04:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2022-11-02 21:04:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1015. [2022-11-02 21:04:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 1.4230769230769231) internal successors, (1443), 1014 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:44,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1443 transitions. [2022-11-02 21:04:44,693 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1443 transitions. Word has length 68 [2022-11-02 21:04:44,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:44,694 INFO L495 AbstractCegarLoop]: Abstraction has 1015 states and 1443 transitions. [2022-11-02 21:04:44,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1443 transitions. [2022-11-02 21:04:44,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:04:44,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:44,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:44,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:44,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:44,915 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:44,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:44,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2094198769, now seen corresponding path program 1 times [2022-11-02 21:04:44,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:44,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347751749] [2022-11-02 21:04:44,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:44,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:44,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:44,919 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:44,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:04:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:45,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-02 21:04:45,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:46,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:56,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:56,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347751749] [2022-11-02 21:04:56,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347751749] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:56,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:56,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:04:56,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621395129] [2022-11-02 21:04:56,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:56,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:04:56,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:56,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:04:56,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=250, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:04:56,392 INFO L87 Difference]: Start difference. First operand 1015 states and 1443 transitions. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:56,481 INFO L93 Difference]: Finished difference Result 1846 states and 2622 transitions. [2022-11-02 21:04:56,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:04:56,482 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:04:56,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:56,487 INFO L225 Difference]: With dead ends: 1846 [2022-11-02 21:04:56,488 INFO L226 Difference]: Without dead ends: 1844 [2022-11-02 21:04:56,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=54, Invalid=250, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:04:56,489 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 431 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:56,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1688 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-11-02 21:04:56,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-11-02 21:04:56,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1019. [2022-11-02 21:04:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1018 states have (on average 1.4214145383104126) internal successors, (1447), 1018 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1447 transitions. [2022-11-02 21:04:56,594 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1447 transitions. Word has length 68 [2022-11-02 21:04:56,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:56,595 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1447 transitions. [2022-11-02 21:04:56,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1447 transitions. [2022-11-02 21:04:56,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:04:56,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:56,598 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:56,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:56,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:56,820 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:56,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:56,821 INFO L85 PathProgramCache]: Analyzing trace with hash 248831603, now seen corresponding path program 1 times [2022-11-02 21:04:56,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:56,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833193681] [2022-11-02 21:04:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:56,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:56,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:56,824 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:56,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:04:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:57,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-02 21:04:57,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:58,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:09,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:09,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833193681] [2022-11-02 21:05:09,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833193681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:09,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:09,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:05:09,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315672077] [2022-11-02 21:05:09,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:09,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:05:09,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:09,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:05:09,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=187, Unknown=4, NotChecked=0, Total=240 [2022-11-02 21:05:09,075 INFO L87 Difference]: Start difference. First operand 1019 states and 1447 transitions. Second operand has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:09,230 INFO L93 Difference]: Finished difference Result 1726 states and 2458 transitions. [2022-11-02 21:05:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:05:09,231 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:05:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:09,236 INFO L225 Difference]: With dead ends: 1726 [2022-11-02 21:05:09,236 INFO L226 Difference]: Without dead ends: 1724 [2022-11-02 21:05:09,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=49, Invalid=187, Unknown=4, NotChecked=0, Total=240 [2022-11-02 21:05:09,238 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 369 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:09,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1452 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 35 Unchecked, 0.0s Time] [2022-11-02 21:05:09,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2022-11-02 21:05:09,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1019. [2022-11-02 21:05:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1018 states have (on average 1.4214145383104126) internal successors, (1447), 1018 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1447 transitions. [2022-11-02 21:05:09,325 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1447 transitions. Word has length 68 [2022-11-02 21:05:09,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:09,326 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1447 transitions. [2022-11-02 21:05:09,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:09,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1447 transitions. [2022-11-02 21:05:09,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:05:09,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:09,329 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:09,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:09,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:09,555 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:09,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:09,556 INFO L85 PathProgramCache]: Analyzing trace with hash -595173899, now seen corresponding path program 1 times [2022-11-02 21:05:09,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:09,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355846553] [2022-11-02 21:05:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:09,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:09,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:09,558 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:09,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:05:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:10,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-02 21:05:10,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:10,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:18,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:18,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355846553] [2022-11-02 21:05:18,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355846553] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:18,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:18,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:05:18,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560692979] [2022-11-02 21:05:18,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:18,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:05:18,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:18,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:05:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=189, Unknown=2, NotChecked=0, Total=240 [2022-11-02 21:05:18,869 INFO L87 Difference]: Start difference. First operand 1019 states and 1447 transitions. Second operand has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:18,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:18,972 INFO L93 Difference]: Finished difference Result 1570 states and 2232 transitions. [2022-11-02 21:05:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:05:18,973 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:05:18,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:18,978 INFO L225 Difference]: With dead ends: 1570 [2022-11-02 21:05:18,978 INFO L226 Difference]: Without dead ends: 1568 [2022-11-02 21:05:18,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=49, Invalid=189, Unknown=2, NotChecked=0, Total=240 [2022-11-02 21:05:18,980 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 387 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:18,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1060 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 36 Unchecked, 0.0s Time] [2022-11-02 21:05:18,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2022-11-02 21:05:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1019. [2022-11-02 21:05:19,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1018 states have (on average 1.4214145383104126) internal successors, (1447), 1018 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:19,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1447 transitions. [2022-11-02 21:05:19,073 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1447 transitions. Word has length 68 [2022-11-02 21:05:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:19,073 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1447 transitions. [2022-11-02 21:05:19,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:19,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1447 transitions. [2022-11-02 21:05:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:05:19,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:19,076 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:19,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:19,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:19,290 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:19,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:19,291 INFO L85 PathProgramCache]: Analyzing trace with hash -454625289, now seen corresponding path program 1 times [2022-11-02 21:05:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:19,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901631601] [2022-11-02 21:05:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:19,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:19,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:19,294 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:19,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:05:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:19,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:05:19,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:20,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:20,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:20,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901631601] [2022-11-02 21:05:20,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901631601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:20,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:20,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:20,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403539631] [2022-11-02 21:05:20,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:20,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:20,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:20,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:20,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:20,058 INFO L87 Difference]: Start difference. First operand 1019 states and 1447 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:20,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:20,403 INFO L93 Difference]: Finished difference Result 1806 states and 2549 transitions. [2022-11-02 21:05:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:05:20,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:05:20,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:20,408 INFO L225 Difference]: With dead ends: 1806 [2022-11-02 21:05:20,408 INFO L226 Difference]: Without dead ends: 1465 [2022-11-02 21:05:20,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:05:20,409 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 58 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:20,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 623 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 27 Unchecked, 0.2s Time] [2022-11-02 21:05:20,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2022-11-02 21:05:20,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1221. [2022-11-02 21:05:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 1.410655737704918) internal successors, (1721), 1220 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1721 transitions. [2022-11-02 21:05:20,500 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1721 transitions. Word has length 68 [2022-11-02 21:05:20,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:20,501 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1721 transitions. [2022-11-02 21:05:20,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:20,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1721 transitions. [2022-11-02 21:05:20,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:05:20,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:20,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:20,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:20,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:20,722 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:20,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1041431303, now seen corresponding path program 1 times [2022-11-02 21:05:20,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:20,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036163404] [2022-11-02 21:05:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:20,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:20,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:20,725 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:20,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:05:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:21,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 21:05:21,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:22,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:29,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:29,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036163404] [2022-11-02 21:05:29,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036163404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:29,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:29,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:05:29,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989606209] [2022-11-02 21:05:29,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:29,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:05:29,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:29,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:05:29,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=189, Unknown=2, NotChecked=0, Total=240 [2022-11-02 21:05:29,896 INFO L87 Difference]: Start difference. First operand 1221 states and 1721 transitions. Second operand has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:30,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:30,012 INFO L93 Difference]: Finished difference Result 2224 states and 3129 transitions. [2022-11-02 21:05:30,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:05:30,016 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:05:30,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:30,021 INFO L225 Difference]: With dead ends: 2224 [2022-11-02 21:05:30,021 INFO L226 Difference]: Without dead ends: 2222 [2022-11-02 21:05:30,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=49, Invalid=189, Unknown=2, NotChecked=0, Total=240 [2022-11-02 21:05:30,023 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 186 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:30,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1105 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-11-02 21:05:30,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2022-11-02 21:05:30,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1237. [2022-11-02 21:05:30,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1236 states have (on average 1.411812297734628) internal successors, (1745), 1236 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:30,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1745 transitions. [2022-11-02 21:05:30,140 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1745 transitions. Word has length 68 [2022-11-02 21:05:30,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:30,141 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 1745 transitions. [2022-11-02 21:05:30,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:30,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1745 transitions. [2022-11-02 21:05:30,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:05:30,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:30,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:30,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-02 21:05:30,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:30,366 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:30,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:30,367 INFO L85 PathProgramCache]: Analyzing trace with hash -950619011, now seen corresponding path program 1 times [2022-11-02 21:05:30,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:30,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941484088] [2022-11-02 21:05:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:30,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:30,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:30,370 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:30,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:05:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:30,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:05:30,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:31,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:31,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:31,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941484088] [2022-11-02 21:05:31,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941484088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:31,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:31,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:31,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806838248] [2022-11-02 21:05:31,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:31,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:31,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:31,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:31,061 INFO L87 Difference]: Start difference. First operand 1237 states and 1745 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:31,442 INFO L93 Difference]: Finished difference Result 3160 states and 4417 transitions. [2022-11-02 21:05:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:05:31,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:05:31,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:31,449 INFO L225 Difference]: With dead ends: 3160 [2022-11-02 21:05:31,449 INFO L226 Difference]: Without dead ends: 2527 [2022-11-02 21:05:31,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:05:31,451 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 134 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:31,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 732 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2022-11-02 21:05:31,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2022-11-02 21:05:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 1685. [2022-11-02 21:05:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1684 states have (on average 1.4008313539192399) internal successors, (2359), 1684 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2359 transitions. [2022-11-02 21:05:31,543 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2359 transitions. Word has length 68 [2022-11-02 21:05:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:31,544 INFO L495 AbstractCegarLoop]: Abstraction has 1685 states and 2359 transitions. [2022-11-02 21:05:31,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2359 transitions. [2022-11-02 21:05:31,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:05:31,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:31,547 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:31,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:31,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:31,762 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:31,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:31,763 INFO L85 PathProgramCache]: Analyzing trace with hash -527917185, now seen corresponding path program 1 times [2022-11-02 21:05:31,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:31,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822515758] [2022-11-02 21:05:31,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:31,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:31,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:31,765 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:31,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:05:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:32,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 21:05:32,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:33,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:42,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:42,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822515758] [2022-11-02 21:05:42,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822515758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:42,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:42,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:05:42,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700327721] [2022-11-02 21:05:42,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:42,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:05:42,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:42,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:05:42,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=229, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:05:42,800 INFO L87 Difference]: Start difference. First operand 1685 states and 2359 transitions. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:43,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:43,196 INFO L93 Difference]: Finished difference Result 2657 states and 3709 transitions. [2022-11-02 21:05:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:05:43,197 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:05:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:43,205 INFO L225 Difference]: With dead ends: 2657 [2022-11-02 21:05:43,205 INFO L226 Difference]: Without dead ends: 2655 [2022-11-02 21:05:43,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=91, Invalid=287, Unknown=2, NotChecked=0, Total=380 [2022-11-02 21:05:43,207 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 241 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:43,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 863 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-11-02 21:05:43,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2022-11-02 21:05:43,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2607. [2022-11-02 21:05:43,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2607 states, 2606 states have (on average 1.397544128933231) internal successors, (3642), 2606 states have internal predecessors, (3642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2607 states to 2607 states and 3642 transitions. [2022-11-02 21:05:43,381 INFO L78 Accepts]: Start accepts. Automaton has 2607 states and 3642 transitions. Word has length 68 [2022-11-02 21:05:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:43,381 INFO L495 AbstractCegarLoop]: Abstraction has 2607 states and 3642 transitions. [2022-11-02 21:05:43,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2607 states and 3642 transitions. [2022-11-02 21:05:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:05:43,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:43,386 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:43,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:43,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:43,607 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:43,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:43,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1267948289, now seen corresponding path program 1 times [2022-11-02 21:05:43,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:43,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818745255] [2022-11-02 21:05:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:43,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:43,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:43,609 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:43,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:05:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:44,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:05:44,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:44,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:44,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:44,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818745255] [2022-11-02 21:05:44,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818745255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:44,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:44,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:44,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546139934] [2022-11-02 21:05:44,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:44,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:44,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:44,235 INFO L87 Difference]: Start difference. First operand 2607 states and 3642 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:44,649 INFO L93 Difference]: Finished difference Result 3988 states and 5520 transitions. [2022-11-02 21:05:44,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:05:44,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:05:44,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:44,658 INFO L225 Difference]: With dead ends: 3988 [2022-11-02 21:05:44,658 INFO L226 Difference]: Without dead ends: 3563 [2022-11-02 21:05:44,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:05:44,661 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 153 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:44,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 668 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 24 Unchecked, 0.2s Time] [2022-11-02 21:05:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2022-11-02 21:05:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 2607. [2022-11-02 21:05:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2607 states, 2606 states have (on average 1.394090560245587) internal successors, (3633), 2606 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2607 states to 2607 states and 3633 transitions. [2022-11-02 21:05:44,830 INFO L78 Accepts]: Start accepts. Automaton has 2607 states and 3633 transitions. Word has length 68 [2022-11-02 21:05:44,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:44,830 INFO L495 AbstractCegarLoop]: Abstraction has 2607 states and 3633 transitions. [2022-11-02 21:05:44,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2607 states and 3633 transitions. [2022-11-02 21:05:44,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:05:44,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:44,835 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:44,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:45,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:45,050 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:45,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:45,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1103790973, now seen corresponding path program 1 times [2022-11-02 21:05:45,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:45,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280402081] [2022-11-02 21:05:45,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:45,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:45,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:45,053 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:45,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:05:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:45,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 21:05:45,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:46,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:52,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:52,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280402081] [2022-11-02 21:05:52,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280402081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:52,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:52,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:05:52,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828140804] [2022-11-02 21:05:52,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:52,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:05:52,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:52,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:05:52,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:05:52,342 INFO L87 Difference]: Start difference. First operand 2607 states and 3633 transitions. Second operand has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:52,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:52,803 INFO L93 Difference]: Finished difference Result 3432 states and 4790 transitions. [2022-11-02 21:05:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:05:52,804 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-02 21:05:52,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:52,811 INFO L225 Difference]: With dead ends: 3432 [2022-11-02 21:05:52,811 INFO L226 Difference]: Without dead ends: 3430 [2022-11-02 21:05:52,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:05:52,813 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 309 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:52,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 893 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 43 Unchecked, 0.0s Time] [2022-11-02 21:05:52,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2022-11-02 21:05:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3407. [2022-11-02 21:05:53,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 3406 states have (on average 1.3963593658250146) internal successors, (4756), 3406 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 4756 transitions. [2022-11-02 21:05:53,020 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 4756 transitions. Word has length 68 [2022-11-02 21:05:53,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:53,021 INFO L495 AbstractCegarLoop]: Abstraction has 3407 states and 4756 transitions. [2022-11-02 21:05:53,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.444444444444445) internal successors, (134), 18 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:53,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 4756 transitions. [2022-11-02 21:05:53,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:05:53,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:53,027 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:53,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-02 21:05:53,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:53,248 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:53,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1502232581, now seen corresponding path program 1 times [2022-11-02 21:05:53,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:53,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683575662] [2022-11-02 21:05:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:53,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:53,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:53,251 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:53,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0d7b7-aa86-4d69-9a63-0236a2142217/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:05:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:53,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 21:05:53,782 INFO L286 TraceCheckSpWp]: Computing forward predicates...